A side of the triangle below has been extended to form an exterior angle of 131°. Find the value of xx. 112° 131° x°
The sum of the interior angles of a triangle is always 180°. Since angle x is an exterior angle, it is equal to the sum of the two non-adjacent interior angles.
Therefore, x = 131° - 112°
x = 19°
So, the value of x is 19°.